/**
 * Copyright 2020 Alibaba Group Holding Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.maxgraph.compiler.tree;

public final class TreeConstants {
    public static final int ID_INDEX = -1;
    public static final int LABEL_INDEX = -2;
    public static final int KEY_INDEX = -3;
    public static final int VALUE_INDEX = -4;

    public static final int USER_LABEL_START = -10;
    public static final int SYS_LABEL_START = -1000;

    public static final int MAGIC_LABEL_ID = -9999;
    public static final int MAGIC_PROP_ID = 9999;
}
